def test_lucky_return_different_result_on_different_request(self):
self._add_file('a.jpg')
self._add_file('b.jpg')
_1st = lucky()
_2nd = lucky()
self.assertNotEqual(_1st, None)
self.assertNotEqual(_2nd, None)
self.assertNotEqual(_1st, _2nd)
def test_lucky_return_None_if_no_more_file(self):
self._add_file('a.jpg')
self._add_file('b.jpg')
lucky()
lucky()
self.assertEqual(lucky(), None)
def test_lucky_return_file_path_if_one_file(self):
self._add_file('a.jpg')
self.assertEqual(lucky(), 'upload/a.jpg')
def test_lucky_return_None_if_no_file(self):
self.assertEqual(lucky(), None)
